Dental model articulator

• US 4,449,930 A
• Filed: 04/20/1983
• Issued: 05/22/1984
• Est. Priority Date: 05/07/1981
• Status: Expired due to Term

• Current Assignee: DENTSPLY International Incorporated (Astrazeneca PLC)
• Original Assignee: KV33 Corporation
• Inventors: Huffman, Ronald E.
• Primary Examiner(s): Peshock, Robert
• Application Number:
  US06/486,897
• Time in Patent Office: 398 Days
• Field of Search: 433/54, 433/57, 433/64, 433/60
• US Class Current: 433/64
• CPC Class Codes: A61C 11/02 characterised by the arrangement, location or type of the hinge means ; Articulators with pivots
• CPC Class Codes: A61C 11/084 for 3D adjustment, e.g. Ball-and-socket

Abstract

An articulator for casts of a dental model correlates the casts with the condition to be redintegrated throughout a full range of occlusal and masticatory registration. The articulator includes an hinged two part flexible element, each of which parts is a mirror image of the other, or a hinged one part flexible element having like opposing halves. Each opposed end of either type of element supports a sphere to be positioned within a respective one of a cavity formed in each cast and adhesively secured thereto after alignment of the paired casts. Simulation and tracing the paths of natural occlusal and masticatory registration is effected by pivotal movement about the hinge line and flexing of the articulator.

The present application is a continuation-in-part application of a copending application entitled "DENTAL MODEL ARTICULATOR", Ser. No. 261,562, filed May 7, 1981, now U.S. Pat. No. 4,382,787, issued 5/10/83 assigned to the present assignee and describing an invention by the present inventor.

Claims

1. A method for mounting casts of a dental model to afford correlation of the casts throughout a full range of occlusal and masticatory registration, said method comprising the steps of:

(a) pivoting along a pivot axis one end of a first bracket with a hingedly connected one end of a second bracket;

(b) interconnecting the other end of one of the brackets through a pivot mechanism providing pivotal freedom between each cast and its connected bracket about any axis of a set of intersecting orthogonal axis;

(c) positioning the casts relative to one another at one end of the range of occlusal and masticatory registration to be redintegrated by adjusting the angular relationship about any or all pivot axis between each cast and its engaged bracket and by adjusting the angular relationship about the pivot axis between the hingedly connected ends of the brackets; and

(d) immobilizing the angular relationship between each cast and its engaged bracket on completion of said positioning step to maintain permanently fixed the angular relationship between each cast and its respective bracket.

2. The method as set forth in claim 1 wherein said step of pivoting includes the step of disengageably snap fitting the brackets to one another.

3. The method as set forth in claim 1 wherein said step of pivoting includes the step of pivotally connecting the brackets to one another at two discrete locations disposed along a common pivot axis.

4. The method as set forth in claim 3 wherein said step of pivoting includes the steps of disengageably snap fitting the brackets to one another at each of the two discrete locations.

5. The method as set forth in claim 1 wherein each cast includes one element of a ball and socket joint and wherein another element of the ball and socket joint is disposed at the other end of each bracket and wherein said step of interconnecting comprises the steps of interconnecting one and the other elements to form a ball and socket joint between each cast and its attached bracket.

6. The method as set forth in claim 5 wherein the one element comprises a socket and wherein the other element comprises a ball and wherein said step of interconnecting comprises the step of inserting each ball into one of the sockets.

7. The method as set forth in claim 6 wherein said step of pivoting includes the step of pivotally connecting the brackets to one another at two discrete locations disposed along a common pivot axis.

8. The method as set forth in claim 7 wherein said step of pivoting includes the steps of disengageably snap fitting the brackets to one another at each of the two discrete locations.

9. A method for redintegrating the casts of a dental model throughout a full range of occlusal and masticatory registration to develop a dental prosthetic device mounted on the casts, said method comprising the steps of:

(a) forming a mounting at each cast;

(b) pivoting along a pivot axis one end of a first bracket with a hingedly connected one end of a second bracket;

(c) interconnecting each mounting with the other end of one of the brackets through a ball and socket joint;

(d) positioning the casts relative to one another at one end of the range of occlusal and masticatory registration to be redintegrated by adjusting the angular relationship between each mounting and its engaged bracket and adjusting the angular relationship about the pivot axis between the hingedly connected ends of the brackets;

(e) immobilizing the ball and socket joint between connected ones of the mounting and the brackets to maintain permanently the fixed angular relationship established between connected ones of the mountings and brackets on completion of said step of positioning;

(f) flexing the brackets to translate and rotate the casts relative to one another to determine adjustments necessary to the model teeth or prosthetic devices or restorations formed thereon;

(g) alternatively pivoting the casts about the pivot axis of the brackets through an obtuse angle or disengaging the brackets one from the other to permit unrestricted access to the casts for making the adjustments determined in said flexing step;

(h) alternatively repivoting the casts into registration with one another or reengaging the brackets with one another depending upon whether said pivoting or disengaging step, respectively, were undertaken; and

(i) repeating said steps of flexing, alternatively pivoting or disengaging and alternatively repivoting or reengaging until the model teeth, prosthetic device or restoration is developed.

10. The method as set forth in claim 9 wherein the brackets are connected to one another by pivoting snap fits and said steps of disengaging and reengaging comprise the steps of unsnapping and snapping, respectively, the snap fits.

11. An articulator for correlating the casts of a dental model, each of the casts including a mounting, said articulator comprising in combination:

(a) pair of resiliently flexible brackets, each said bracket terminating at one end;

(b) means for pivoting the one end of one bracket with the one end of the other bracket about a common pivot axis; and

(c) means for interconnecting each of the casts with another end of one bracket of said pair of brackets, said interconnecting means including a ball and socket joint wherein one of the ball and socket of said ball and socket joint is defined by the mounting and wherein the other of the ball and socket of said ball and socket joint is formed by said bracket;

whereby, the angular relationship between each cast and the interconnected one of said pair of brackets may be fixed after registration of the casts relative to one another by adjusting the angular relationship between each mounting and its engaged one of said pair of brackets and by adjusting the angular relationship about the pivot axis between the pivotally connected ends of said pair of brackets.

12. The articulator as set forth in claim 11 including fixing means disposed intermediate the ball and socket of each said ball and socket joint for fixing the angular relationship therebetween.

13. The articulator as set forth in claim 11 wherein said ball of said ball and socket joint attendant each bracket of said pair of brackets extends from said bracket for engagement with the mounting developed as a socket in the respective cast.

14. The articulator as set forth in claim 11 wherein said pair of brackets are configured as mirror images of one another.

15. The articulator as set forth in claim 11 wherein said pivoting means attendant said brackets is formed as an integral part of said brackets.

16. The articulator as set forth in claim 15 wherein said pair of brackets and said pivoting means are formed as an integral one part unit.

17. The articulator as set forth in claim 11 wherein said interconnecting means includes one of said elements being formed as an integral part of each one of said pair of brackets.

18. The articulator as set forth in claim 17 wherein said pivoting means attendant said brackets is formed as an integral part of said brackets.

19. The articulator as set forth in claim 18 wherein said pair of brackets and said pivoting means are formed as an integral one part unit.

20. The articulator as set forth in claim 18 wherein said pair of brackets are configured as mirror images of one another.

21. The articulator as set forth in claim 20 wherein each bracket of said pair of brackets includes a base member and a pair of legs extending therefrom and terminating at said one end of the bracket.

22. The articulator as set forth in claim 19 wherein said pair of brackets are configured as mirror images of one another.

23. The articulator as set forth in claim 22 wherein each bracket of said pair of brackets includes a base member and a pair of legs extending therefrom and terminating at said one end of the bracket.

24. The articulator as set forth in claim 13 including a stalk disposed intermediate each said ball and the respective one of said pair of brackets.

25. The articulator as set forth in claim 13 wherein each said bracket of said pair of brackets includes a base member and wherein each of said balls is laterally displaced of the longitudinal axis defined by said base member of the respective one of said pair of brackets.

26. The articulator as set forth in claim 25 including a pair of legs extending from said base member and terminating at said one end of the bracket.

27. The articulator as set forth in claim 26 wherein said brackets of said pair of brackets are configured as mirror images of one another.

28. The articulator as set forth in claim 24 wherein each said bracket of said pair of brackets includes a base member for supporting one of said stalks.

29. The articulator as set forth in claim 28 wherein each said stalk is angled with respect to said bracket to displace said ball laterally of the longitudinal axis of said base member.

30. The articulator as set forth in claim 29 wherein said pair of brackets are configured as mirror images of one another.

31. The articulator as set forth in claim 30 wherein said pivoting means attendant said brackets is formed as an integral part of said brackets.

32. The articulator as set forth in claim 31 wherein said pair of brackets and said pivoting means are formed as an integral one part unit.

33. The articulator as set forth in claim 32 wherein each said ball is disposed longitudinally off center along said base member.

34. The articulator as set forth in claim 32 wherein each said ball is disposed longitudinally centered along said base member.

35. The articulator as set forth in claim 34 wherein said pair of brackets are configured as duplicates of one another.